Oh, wow. Really. Wow.
From the notes on Wikipedia:
“Chilseonggeom (칠성검; 七星劍): The name of this sword translates as “seven star sword” and it could be either single-edged or double-edged. It is primarily known for its use by Buddhist practitioners. Almost all of these swords had constellation engravings on the blades (usually the Big Dipper, although depiction of any 7 star cluster isn’t uncommon).”
This is the kind of thing that could turn up in a fantasy movie and people would think it was made up….
Other than that, have been wrestling with taxes. Have not maimed anyone. Music helps calm a body down, so… some vid links!